The Washer,spring Tension, cataloged under National Stock Number 5310-00-073-8319, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-073-8319 |
| Primary Part Number | 577R391H01 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Material Document and Classification | AMS 5529 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.718 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Material Thickness | 0.014 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 631 OVERALL |
| Hole Diameter | 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 577R391H01 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 577R391H01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-073-8319 is a Washer,spring Tension, manufactured by Westinghouse Electric Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-073-8319 has 1 manufacturer part number on file: 577R391H01 (Westinghouse Electric Corp).
Key specifications for 577R391H01: Overall Height: 0.132 INCHES NOMINAL IN; Material Document and Classification: AMS 5529 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.718 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN; Material Thickness: 0.014 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.